Related Experiment Video
Updated: Jun 22, 2025
09:16
A General Method for Evaluating Deep Brain Stimulation Effects on Intravenous Methamphetamine Self-Administration
Published on: January 22, 2016
15.2K
Sex differences in behavior, cognitive, and physiological recovery following methamphetamine administration
Monserrat Armenta-Resendiz1, Jordan S Carter1, Zachariah Hunter1
1Department of Neuroscience, MUSC, 173 Ashley Ave 403BSB, Charleston, SC, 29425, USA.
Psychopharmacology
|July 2, 2024
Summary
Methamphetamine use impairs executive functions and memory, with males showing lasting deficits while females exhibit neuroprotective recovery. This highlights sex differences in substance use disorder consequences.
Area of Science:
- Neuroscience
- Psychopharmacology
- Cognitive Science
Background:
- Executive functions depend on medial prefrontal cortex (mPFC) excitatory/inhibitory balance.
- Methamphetamine (meth) use causes hypofrontality and cognitive deficits, with potential sex differences.
- Rodent models mimic meth-induced hypofrontality and cognitive impairments.
Purpose of the Study:
- Investigate sex differences in meth-induced cognitive deficits and mPFC GABAergic transmission.
- Examine effects of short (7 days) and prolonged (28 days) abstinence periods.
- Assess changes in GABAergic transmission, GABAAR, and GAT mRNA expression.
Main Methods:
- Utilized a meth sensitization regimen in a rodent model.
- Assessed Temporal Order Memory (TOM) task performance.
- Evaluated GABAergic transmission via patch-clamp recordings and mRNA expression via RT-qPCR.
Main Results:
- Both sexes sensitized to meth; females showed persistent effects.
- Short abstinence impaired TOM and increased GABAergic transmission in both sexes.
- Males exhibited enduring TOM and GABAergic changes, while females recovered after prolonged abstinence.
Conclusions:
- Repeated meth exposure has sex-specific long-term neurobiological and cognitive effects.
- Females may possess neuroprotective mechanisms against meth-induced cognitive deficits.
- Findings underscore the importance of considering sex as a biological variable in substance use research.
